What are the top 10 worst hurricanes in U.S. history? Listing the worst hurricanes can take different variables, such as the deadliest or costliest. Here's a list in order of lives lost in the U.S ...

1889: The Johnstown Flood The deadliest flood in the nation's history was caused by a dam break upstream from Johnstown, Pennsylvania, according to the National Oceanic and Atmospheric ...

1928: St. Francis dam disaster The St. Francis Dam disaster is known as one of the worst failures of civil engineering in the 20th century. The dam was built to create a reservoir northwest of Los ...